Urethral catheterization structure

Abstract

The application provides a urethral catheterization structure. The urethral catheterization structure comprises an outer sheath pipe with a liquid discharge port, an inner core arranged in the outer sheath pipe in a penetrating manner, and a balloon arranged at a distal end of the inner core, the balloon is located in the bladder of a patient, the outer sheath pipe can receive an external force effect and conduct axial moving relative to the inner core, wherein when the liquid discharge port of the outer sheath pipe is located between the sphincter and bladder of the patient, urine in the bladder of the patient directly flows into the liquid discharge port and is also discharged out to provide a non-autonomic urination function, while when the liquid discharge port of the outer sheath pipeis located between the sphincter and external urethral orifice of the patient, urine in the bladder flows through the sphincter, enters urethra, then flows into the liquid discharge port and is discharged out via a catheterization route to provide an autonomic urination function. Therefore, the urethral catheterization structure can convert and provide functions of independent urination and non-independent urination according to actual use requirements of the patient, can effectively relieve urinary tract irritation symptoms of the patient, and reduces risks of urinary tract infection.

Description

technical field [0001] The embodiments of the present application relate to the technical field of medical devices, in particular to a catheter structure for leading out urine in the bladder. Background technique [0002] At present, the catheter widely used in clinical medicine is the Foley catheter invented in the 1930s. Compared with the previous catheters, this type of catheter has the advantages of softness, elasticity, easy fixing, and waterproof, so it is still in use today. However, the current Foley catheter also has obvious defects, and the complications caused by these defects are also widespread in clinical practice. [0003] For example, in the United States in 2002, the number of visits to doctors simply because of the problem of Foley catheters was as high as 7 million, and the direct and indirect losses were as high as 1.6 billion US dollars. In addition, there were many incalculable pains caused to patients. These complications include catheter-related urin...

AI Technical Summary

Problems solved by technology

[0004] Through the structural analysis of the Foley catheter, it will be found that the above-mentioned problems are mainly caused by the structural design defect of the Foley catheter itself, mainly including the following aspects: the protruding part (ie, the guide end) of the bladder end of the catheter When the patient is empty or when the patient changes position, it is easy to poke the bladder wall of the patient, thereby inducing bladder spasm or urinary tract irritation symptoms, and repeatedly poking the bladder wall is easy to damage the epithelial protective structure of the bladder, resulting in urinary tract infection ; (2) The spherical balloon structure at the bladder end of the urinary catheter and the relative position of the drainage outlet make it possible for a small amount of urine to accumulate between the urinary catheter balloon and the bladder wall when the urinary catheter is completely emptied. stagnant water, which is also an important factor inducing urinary tract infection; (3) for short-term indwelling catheters, such as patients who need anesthesia, usually indwelling catheters in the urethra during surgery to prevent Help the patient to complete the export of urine in the bladder in an unconscious state; but when the patient regains consciousness and can move freely after the operation, the patient can complete voluntary urination. However, due to the needs of disease management, the indwelling catheter cannot be pulled out immediately However, it still needs to be left for observation for a few days. The existing urinary catheter does not have the function of changing from involuntary urination to voluntary urination, so that on the one hand, the catheter will form irritation in the urethra, and on the other hand, the urethral mucosa will be damaged under the stimulated condition. Increased discharge, increasing irritation and risk of urinary tract infection

[0005] In response to the above problems, although some urinary catheter structures have been improved, none of them have systematically solved the symptoms of urinary tract irritation and the appearance of urinary catheter structures that can switch between voluntary and involuntary urination.

Images